GGRC33H3 Final: Finals Essay Question #4,7

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magentacicada259

7 Jul 2011

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Short essay questions: 4 & 7: both jabareen (2006) and wheeler (2003) identify urban form factors that are likely to result in sustainable cities or regions. But we know that every place has unique problems and uniqe experiences in solving them. Choose either jabareen or wheeler and discuss how well the current plans to manage growth in the gta conform to the urban design factors he identifies. Note: i have chosen to use the jabareen (2006) article to answer this question. Jabareen"s urban form factors: the emergence of sustainable development as a popular concept has increased discussion of the urban form of cities. Keving lnych (1981) calls it the the spatial pattern of the large inert, permanent, physical objects of the city : sustainable urban form factors, compactness: a widely accepted strategy for more sustainable urban forms. It also refers to urban contiguity (no leapfrog), containment of sprawl rather than reduction.

Related Questions

To practice Problem-Solving Strategy 21.1 Conservation of energy incharge interactions.

An alpha particle (), which is the same as a helium-4 nucleus, ismomentarily at rest in a region of space occupied by an electricfield. The particle then begins to move. Find the speed of thealpha particle after it has moved through a potential difference of-3.45Ã10-3 .
The charge and the mass of an alpha particle are = 3.20Ã10-19 and =6.68Ã10-27 , respectively.

PROBLEM-SOLVING STRATEGY Conservation of energy in chargeinteractions

PREPARE Draw a before-and-after visual overview. Define symbolsthat will be used in the problem, list known values, and identifywhat you're trying to find.

SOLVE The mathematical representation is based on the law ofconservation of mechanical energy:

.

Find the electric potential at both the initial and finalpositions. You may need to calculate it from a known expression forthe potential, such as that of a point charge.
and are the total kinetic energies of all moving particles.
Some problems may need additional conservation laws, such asconservation of charge or conservation of momentum.
ASSESS Check that your result has the correct units, is reasonable,and answers the question.

Prepare
Identify the system involving the alpha particle. Then examine theforces acting within this system to determine whether mechanicalenergy is conserved. Make certain to draw a before-and-after visualoverview and to define your symbols.
Part A
Mechanical energy is conserved in the presence of which of thefollowing types of forces?
Select all that apply.
? frictional
? electrostatic
? magnetic
? gravitational

Which of the following quantities are unknown?
? the value of the electric potential at the initial position ofthe alpha particle
? the final speed of the alpha particle
? the charge of the alpha particle
? the mass of the alpha particle
? the difference in potential between the initial and finalpositions of the alpha particle
? the value of the electric potential at the final position of thealpha particle
? the initial speed of the alpha particle

Hi this is the introduction that I have written for my poster. Myposter is on the following URL (please have a look!).

http://i55.tinypic.com/e0g0w5.jpg

Please correct the introduction for any scientific or grammaticalerrors and give me your suggestions about this section as well asthe overall poster. Thanks

This is very important so if you are not good at it pleasedon't answer.

Here is the introduction :

Have you ever thought about why would thrilling rides getyou excited, make your heart racing orsometimes even make you start screaming from the depths of yourcore, forming a bead of sweat on your forehead?

Well, the answer lies in physics. These rides demonstratevery good examples of the physics laws and concepts involved innature and their affect on us in real life applications.

Height, weightlessness, high velocity, hugeacceleration, the sudden impulse and themomentary change in momentum, the work being done and the suddenchange in energy are all factors that contribute inmaking a thrilling ride an exciting one. Those factorsmake adrenalin concentrations in our body system increasecausing higher blood pressure thus stimulating theheart.. They also make the rider in a lot ofuncertainty and unexpected visual cues.

An example of a thrilling ride is the Giant Drop which isa freefall ride involving the drawing of an eight seat carriage bytwin cables to the top of the tower. After one minute full ofanxiety, the riders are plummeted down a height of 39 stories(almost 115m) then brought to a halt within meters from the groundby a sophisticated magnetic braking system.

1. If a car's wheels are replaced with wheels of greater diameter,will the reading of the speedometer change? Explain.

2. Weightlessness in space is known to have harmful effects on thebodies of people in space. To set up inhabitants (people) in space,it has been suggested that rotating cylinders about 10 miles longand 5 miles in diameter be placed in space. The purpose of theirrotation is to simulate gravity for the people so they have weight.Explain how this is possible?
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Please use DragMath to submit the solutions to problems No. 5 and 6of Activity 9A on page 129 of Bendall & Howison.
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1. Why do the string instruments go flat (lower frequencies) andthe wind instruments go sharp (higher frequencies) during aperformance if an orchestra doesn't warm up beforehand?
2. If you were carrying a fish tank filled with water, what willhappen if your walking frequency matches the natural frequency ofthe water in the tank?
Good luck with these questions. I look forward to a heartydiscussion by Friday this week.
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1. Household circuits are always wired so that the electricaldevices are connected in parallel. Why is this so?
2. How are circuit breakers connected in the household circuits(series or parallel)? What is the use of a circuit breaker? Why isit more advantageous to use a circuit breaker compared to using afuse?
Hope to hear your answers soon.
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Mathematical Question:
Try the question on capacitors Activity 14C no. 3. You can useDragmath to submit your solution. If you are scanning your answersand uploading a file, please keep its size small.
Challenge Question:
A fully charged parallel-plate capacitor remains connected to abattery while you slide a dielectric between the plates. Do thefollowing quantities increase, decrease, or stay the same? (a)capacitance, C (b) charge, Q (c) electric field, E between theplates, (d) change in voltage, V (e) energy stored in thecapacitor.
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Twisted wires: In electrical circuits, it is often the case thatinsulated wires carrying currents in opposite directions aretwisted together. What is the advantage in doing this?
Have a go; looking forward to some interesting replies.
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Metal detectors in airports: When you walk through the doorway ofan airport metal detector, you are really walking through a coil ofmany turns, i.e. an inductor connected to a resonant circuit tunedto the resonant frequency when there is no metal in the inductor.So how does this circuit detect any metal that is in your pocketwhen you walk through the metal detector?
Looking forward to your replies.
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GGRC33H3 Final: Finals Essay Question #4,7

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